Padlock.



Patented Feb. 11, 1913.

INVENTOR. Q ATTORNEYS A. A. PAGE. PADLOGK v APPLICATION FILED JULY10,1911. 1,052,746.

WITNESSES.-

ans

ALBERT A. PAGE, OF EAST HAVEN, CONNECTICUT, ASSIGNOR T0 SARGENT &COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

PADLOCK.

Specification of Letters Patent.

Patented Feb. 11,1913.

Application filed July 10, 1911. Serial No. 637,638.

- To all whom it may concern:

Be it known that I, ALBERT A. PAGE, of the town of East Haven, county ofNew Haven, and State of Connecticut, have invented new and usefulImprovements in Padlocks, of which the following is a full, clear, andexact description when taken in connection with the accompanyingdrawings, which form apart thereof.

This invention relates topadlocks, and the primary object of the same isto provide an improved form of tumbler mechanism for padlocks whichcombines the advantages of maximum security and maximum ease andcheapness of manufacture.

To these and. other ends, the invention consists in the novel featuresillustrated by way of example in the accompanying drawing in whichFigure l is a plan view of the padlock with shackle closed and cap plateremoved; Fig. 2, a similar view with shackle open; Fig. 3, a viewsimilar to Fig. 3, with all the tumblers except the stop tumblerremoved; Fig. 4, a section on line woc, Fig. 1; Fig. 5, a detail of oneof the tumblers; and Fig. 6, a view of the key.

In all figures, similar letters of reference represent like parts.

Referring to the drawings, 1 is the casing of the lock and 2 theshackle. A series of shackle engaging tumblers 3 are pivoted on a pin 4,and each of such tumblers is provided with a hook catch 5 adapted toengage the hook 6 of the shackle. The shackle is provided with a tailpiece 7 having a rounded end face 8. When the shackle is closed, thetail piece thereof lies behind the rear faces of the tumblers. A tumbler9 of ordinary form, unprovided with a shackle engaging hook is pivotedon the pin 4. The tumblers 3 are pressed toward the shackle hook byindividual springs 10, bearing against a pin 11, and they are limit-ed1n such spring pressed movement by a pin 12.

The tumblers. 3 and 9 are held locked against movement away from theshackle hook by means of a stop lug 13 carried by a stop tumbler slide14, which is provided with slots 15 engaging the pin 1 and a guide pin16 respectively. A spring 17 connected at one end to the stop tumblerand having its other end bearing against the rim of the padlock servesto press said tumbler slide into position to stop the tumblers 3 and 9,

from pivotal movement. This stop action is effected by the lug 13 whichis alined with the shoulders 18 of the pivoted tumblers.

A spring 19 mounted on a pin 20 has one end bearing on the tail piece ofthe shackle and serves to throw said shackle outwardly when the same isreleased from the tumblers.

The pivoted tumblers have curved shoulders 21 against which the end face8 of the tail piece of the shackle bears when the shackle is open, thusserving to hold the tumblers 3 out of line with the shackle hook. A key22 is employed for operating the tumblers and it is adapted to engage apin 23. I To unlock the shackle the bit of the key is inserted throughthe key-hole and the key turned to the left, whereupon, the foot of thestop tumbler slide 14 will be first engaged by the key and the saidslide moved toward the left carrying its stop lug out of alinement withthe projecting ends of the tumblers, leaving the latter free to beturned, whereupon in the continued movement of the key the tumblers 3will be rocked on their pivot carrying the hooks thereof out ofengagement with the shackle hook. Thereupon the spring 19 will throw theshackle outwardly to open position, and in this position of the partsthe tumblers 3 will be held retracted and out of line with the shackleby the pressure of the rounded end of the tail piece or heel of theshackle against the curved faces of the tumblers. Upon closing theshackle so as to --lock the padlock, the hook of the shackle will befree to enter its socket without pressure againstthe tumblers, and thusany obstruction of the shackle due to any one of the tumblers beingjammed or displaced is prevented. As the shackle hook is moved intoregistry with the hooks of the cooperating tumblers, the tail piece ofthe shackle will ride against the curved end faces of the tumblers, andas the tail piece slips off the ends of the tumblers the latter will bethrown by their springs toward the shackle end and their hooks willengage and lock the hook of the shackle, while at the same time the tailpiece or heel of the shackle will be locked by the rear ends of thetumblers. It will be noted that the arms 18 which depend from thetumblers at one side of the keyhole lie in the planes of the respectivetumblers, while the lug 13 of the laterally sliding stop member 14 isbent up from the edge of said stop member and extends at an angle to theplane of the latter.

Having thus described my invention, What I claim is 1. In a padlock, thecombination of a pivoted shackle, a pivoted tumbler cooperatingtherewith and provided With a depending stop arm, and a laterallymovable stop slide beneath said tumbler provided at its edge with a lugprojecting out of the plane of said slide and movable laterally into andout of engagement With said tumbler arm; substantially as described.

2. In a padlock, the combination of a pivoted shackle, a tumblercooperating therewith, and a sliding stop member, one of said two lastnamed members having an arm extending from the edge thereof in the planeof said member, and the other member having a lug at the edge thereofextending at an angle to the plane of said member and cooperating Withsaid arm; substantially as described.

3. In a padlock, the combination of a case having a keyhole, a shacklepivoted to the case, a tumbler pivoted in the case and having adepending stop arm at one side of the keyhole lying in the plane of saidtumbler, and a laterally slidable stop member in the case having at oneside of the keyhole a lug extending out of the plane of said member andmovable into and out of engagement With said' stop arm, and providedWith an arm at the opposite side of the keyhole to cooperate With thekey; substantially as described. In Witness whereof, I have hereunto setmy hand on the 6th day of July, 1911.

ALBERT A. PAGE.

Witnesses:

ELIZABETH M. I-IoRAN, HOWARD J. FLETCHER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

